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Finding the Fourth Proportional to 620.24, 850.80 and 614.80

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Solution

The fourth proportional to 620.24, 850.80 and 614.80 is: 843.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.24 : 850.80 = 614.80 : x
  2. Step 2: Convert to fraction form
    620.24/850.80 = 614.80/x
  3. Step 3: Cross multiply
    620.24x = 850.80 × 614.80
  4. Step 4: Simplify right side
    620.24x = 523,071.84
  5. Step 5: Solve for x
    x = 523,071.84/620.24
  6. Step 6: Final answer
    x = 843.34

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.